1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=loop-vectorize,instcombine -force-vector-width=4 -S < %s 2>&1 | FileCheck %s 3 4target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" 5 6;;;; Derived from the following C code 7;; void forked_ptrs_different_base_same_offset(float *A, float *B, float *C, int *D) { 8;; for (int i=0; i<100; i++) { 9;; if (D[i] != 0) { 10;; C[i] = A[i]; 11;; } else { 12;; C[i] = B[i]; 13;; } 14;; } 15;; } 16 17define dso_local void @forked_ptrs_different_base_same_offset(float* nocapture readonly %Base1, float* nocapture readonly %Base2, float* nocapture %Dest, i32* nocapture readonly %Preds) { 18; CHECK-LABEL: @forked_ptrs_different_base_same_offset( 19; CHECK-NEXT: entry: 20; CHECK-NEXT: [[BASE1_FR:%.*]] = freeze float* [[BASE1:%.*]] 21; CHECK-NEXT: [[BASE2_FR:%.*]] = freeze float* [[BASE2:%.*]] 22; CHECK-NEXT: [[DEST_FR:%.*]] = freeze float* [[DEST:%.*]] 23; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] 24; CHECK: vector.memcheck: 25; CHECK-NEXT: [[DEST1:%.*]] = ptrtoint float* [[DEST_FR]] to i64 26; CHECK-NEXT: [[PREDS2:%.*]] = ptrtoint i32* [[PREDS:%.*]] to i64 27; CHECK-NEXT: [[BASE23:%.*]] = ptrtoint float* [[BASE2_FR]] to i64 28; CHECK-NEXT: [[BASE15:%.*]] = ptrtoint float* [[BASE1_FR]] to i64 29; CHECK-NEXT: [[TMP0:%.*]] = sub i64 [[DEST1]], [[PREDS2]] 30; CHECK-NEXT: [[DIFF_CHECK:%.*]] = icmp ult i64 [[TMP0]], 16 31; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[DEST1]], [[BASE23]] 32; CHECK-NEXT: [[DIFF_CHECK4:%.*]] = icmp ult i64 [[TMP1]], 16 33; CHECK-NEXT: [[CONFLICT_RDX:%.*]] = or i1 [[DIFF_CHECK]], [[DIFF_CHECK4]] 34; CHECK-NEXT: [[TMP2:%.*]] = sub i64 [[DEST1]], [[BASE15]] 35; CHECK-NEXT: [[DIFF_CHECK7:%.*]] = icmp ult i64 [[TMP2]], 16 36; CHECK-NEXT: [[CONFLICT_RDX8:%.*]] = or i1 [[CONFLICT_RDX]], [[DIFF_CHECK7]] 37; CHECK-NEXT: br i1 [[CONFLICT_RDX8]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] 38; CHECK: vector.ph: 39; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x float*> poison, float* [[BASE2_FR]], i64 0 40; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x float*> [[BROADCAST_SPLATINSERT]], <4 x float*> poison, <4 x i32> zeroinitializer 41; CHECK-NEXT: [[BROADCAST_SPLATINSERT9:%.*]] = insertelement <4 x float*> poison, float* [[BASE1_FR]], i64 0 42; CHECK-NEXT: [[BROADCAST_SPLAT10:%.*]] = shufflevector <4 x float*> [[BROADCAST_SPLATINSERT9]], <4 x float*> poison, <4 x i32> zeroinitializer 43; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 44; CHECK: vector.body: 45; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 46; CHECK-NEXT: [[TMP3:%.*]] = or i64 [[INDEX]], 1 47; CHECK-NEXT: [[TMP4:%.*]] = or i64 [[INDEX]], 2 48; CHECK-NEXT: [[TMP5:%.*]] = or i64 [[INDEX]], 3 49; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* [[PREDS]], i64 [[INDEX]] 50; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP6]] to <4 x i32>* 51; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP7]], align 4 52; CHECK-NEXT: [[TMP8:%.*]] = icmp eq <4 x i32> [[WIDE_LOAD]], zeroinitializer 53; CHECK-NEXT: [[TMP9:%.*]] = select <4 x i1> [[TMP8]], <4 x float*> [[BROADCAST_SPLAT]], <4 x float*> [[BROADCAST_SPLAT10]] 54; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x float*> [[TMP9]], i64 0 55; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds float, float* [[TMP10]], i64 [[INDEX]] 56; CHECK-NEXT: [[TMP12:%.*]] = extractelement <4 x float*> [[TMP9]], i64 1 57; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds float, float* [[TMP12]], i64 [[TMP3]] 58; CHECK-NEXT: [[TMP14:%.*]] = extractelement <4 x float*> [[TMP9]], i64 2 59; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds float, float* [[TMP14]], i64 [[TMP4]] 60; CHECK-NEXT: [[TMP16:%.*]] = extractelement <4 x float*> [[TMP9]], i64 3 61; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds float, float* [[TMP16]], i64 [[TMP5]] 62; CHECK-NEXT: [[TMP18:%.*]] = load float, float* [[TMP11]], align 4 63; CHECK-NEXT: [[TMP19:%.*]] = load float, float* [[TMP13]], align 4 64; CHECK-NEXT: [[TMP20:%.*]] = load float, float* [[TMP15]], align 4 65; CHECK-NEXT: [[TMP21:%.*]] = load float, float* [[TMP17]], align 4 66; CHECK-NEXT: [[TMP22:%.*]] = insertelement <4 x float> poison, float [[TMP18]], i64 0 67; CHECK-NEXT: [[TMP23:%.*]] = insertelement <4 x float> [[TMP22]], float [[TMP19]], i64 1 68; CHECK-NEXT: [[TMP24:%.*]] = insertelement <4 x float> [[TMP23]], float [[TMP20]], i64 2 69; CHECK-NEXT: [[TMP25:%.*]] = insertelement <4 x float> [[TMP24]], float [[TMP21]], i64 3 70; CHECK-NEXT: [[TMP26:%.*]] = getelementptr inbounds float, float* [[DEST_FR]], i64 [[INDEX]] 71; CHECK-NEXT: [[TMP27:%.*]] = bitcast float* [[TMP26]] to <4 x float>* 72; CHECK-NEXT: store <4 x float> [[TMP25]], <4 x float>* [[TMP27]], align 4 73; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 74; CHECK-NEXT: [[TMP28:%.*]] = icmp eq i64 [[INDEX_NEXT]], 100 75; CHECK-NEXT: br i1 [[TMP28]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] 76; CHECK: middle.block: 77; CHECK-NEXT: br i1 true, label [[FOR_COND_CLEANUP:%.*]], label [[SCALAR_PH]] 78; CHECK: scalar.ph: 79; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 100, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_MEMCHECK]] ] 80; CHECK-NEXT: br label [[FOR_BODY:%.*]] 81; CHECK: for.cond.cleanup: 82; CHECK-NEXT: ret void 83; CHECK: for.body: 84; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 85; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[PREDS]], i64 [[INDVARS_IV]] 86; CHECK-NEXT: [[TMP29:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 87; CHECK-NEXT: [[CMP1_NOT:%.*]] = icmp eq i32 [[TMP29]], 0 88; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[CMP1_NOT]], float* [[BASE2_FR]], float* [[BASE1_FR]] 89; CHECK-NEXT: [[DOTSINK_IN:%.*]] = getelementptr inbounds float, float* [[SPEC_SELECT]], i64 [[INDVARS_IV]] 90; CHECK-NEXT: [[DOTSINK:%.*]] = load float, float* [[DOTSINK_IN]], align 4 91; CHECK-NEXT: [[TMP30:%.*]] = getelementptr inbounds float, float* [[DEST_FR]], i64 [[INDVARS_IV]] 92; CHECK-NEXT: store float [[DOTSINK]], float* [[TMP30]], align 4 93; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 94; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 100 95; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY]], !llvm.loop [[LOOP2:![0-9]+]] 96; 97entry: 98 br label %for.body 99 100for.cond.cleanup: 101 ret void 102 103for.body: 104 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 105 %arrayidx = getelementptr inbounds i32, i32* %Preds, i64 %indvars.iv 106 %0 = load i32, i32* %arrayidx, align 4 107 %cmp1.not = icmp eq i32 %0, 0 108 %spec.select = select i1 %cmp1.not, float* %Base2, float* %Base1 109 %.sink.in = getelementptr inbounds float, float* %spec.select, i64 %indvars.iv 110 %.sink = load float, float* %.sink.in, align 4 111 %1 = getelementptr inbounds float, float* %Dest, i64 %indvars.iv 112 store float %.sink, float* %1, align 4 113 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 114 %exitcond.not = icmp eq i64 %indvars.iv.next, 100 115 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body 116} 117 118;;;; Derived from the following C code 119;; void forked_ptrs_same_base_different_offset(float *A, float *B, int *C) { 120;; int offset; 121;; for (int i = 0; i < 100; i++) { 122;; if (C[i] != 0) 123;; offset = i; 124;; else 125;; offset = i+1; 126;; B[i] = A[offset]; 127;; } 128;; } 129 130define dso_local void @forked_ptrs_same_base_different_offset(float* nocapture readonly %Base, float* nocapture %Dest, i32* nocapture readonly %Preds) { 131; CHECK-LABEL: @forked_ptrs_same_base_different_offset( 132; CHECK-NEXT: entry: 133; CHECK-NEXT: br label [[FOR_BODY:%.*]] 134; CHECK: for.cond.cleanup: 135; CHECK-NEXT: ret void 136; CHECK: for.body: 137; CHECK-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ] 138; CHECK-NEXT: [[I_014:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ADD:%.*]], [[FOR_BODY]] ] 139; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[PREDS:%.*]], i64 [[INDVARS_IV]] 140; CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[ARRAYIDX]], align 4 141; CHECK-NEXT: [[CMP1_NOT:%.*]] = icmp eq i32 [[TMP0]], 0 142; CHECK-NEXT: [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1 143; CHECK-NEXT: [[ADD]] = add nuw nsw i32 [[I_014]], 1 144; CHECK-NEXT: [[TMP1:%.*]] = trunc i64 [[INDVARS_IV]] to i32 145; CHECK-NEXT: [[OFFSET_0:%.*]] = select i1 [[CMP1_NOT]], i32 [[ADD]], i32 [[TMP1]] 146; CHECK-NEXT: [[IDXPROM213:%.*]] = zext i32 [[OFFSET_0]] to i64 147; CHECK-NEXT: [[ARRAYIDX3:%.*]] = getelementptr inbounds float, float* [[BASE:%.*]], i64 [[IDXPROM213]] 148; CHECK-NEXT: [[TMP2:%.*]] = load float, float* [[ARRAYIDX3]], align 4 149; CHECK-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds float, float* [[DEST:%.*]], i64 [[INDVARS_IV]] 150; CHECK-NEXT: store float [[TMP2]], float* [[ARRAYIDX5]], align 4 151; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDVARS_IV_NEXT]], 100 152; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]] 153; 154entry: 155 br label %for.body 156 157for.cond.cleanup: ; preds = %for.body 158 ret void 159 160for.body: ; preds = %entry, %for.body 161 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 162 %i.014 = phi i32 [ 0, %entry ], [ %add, %for.body ] 163 %arrayidx = getelementptr inbounds i32, i32* %Preds, i64 %indvars.iv 164 %0 = load i32, i32* %arrayidx, align 4 165 %cmp1.not = icmp eq i32 %0, 0 166 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 167 %add = add nuw nsw i32 %i.014, 1 168 %1 = trunc i64 %indvars.iv to i32 169 %offset.0 = select i1 %cmp1.not, i32 %add, i32 %1 170 %idxprom213 = zext i32 %offset.0 to i64 171 %arrayidx3 = getelementptr inbounds float, float* %Base, i64 %idxprom213 172 %2 = load float, float* %arrayidx3, align 4 173 %arrayidx5 = getelementptr inbounds float, float* %Dest, i64 %indvars.iv 174 store float %2, float* %arrayidx5, align 4 175 %exitcond.not = icmp eq i64 %indvars.iv.next, 100 176 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body 177} 178